Microservice with go and gRPC

2018 GDG DevFest - go와 gRPC로 함께하는 마이크로서비스

Transcript

1. , / EJSohn Korea go gRPC
2. - - - - - Korea
3. - go - REST .. gRPC ..? - gRPC - - Korea
4. - What is gRPC? - Let s make it! (a.k.a coding time) - gRPC features - Why Microservice? - Summary Korea
5. What is gRPC? Korea
6. gRPC Users
7. History of Server - Client communication Socket RPC CORBA DCOM SOAP REST RMI 1983~ 1980s~1990s 1998~ 1999~ ~ ~ ~
8. History of Server - Client communication Socket RPC CORBA DCOM SOAP REST RMI 1983~ 1980s~1990s 1998~ 1999~ ~ ~ ~ ?
9. History of Server - Client communication Socket RPC CORBA DCOM SOAP REST RMI 1983~ 1980s~1990s 1998~ 1999~ ~ ~ ~ Socket .
10. History of Server - Client communication RPC (Remote Procedure Call) • RPC • . • .
11. History of Server - Client communication Socket RPC CORBA DCOM SOAP REST RMI 1983~ 1980s~1990s 1998~ 1999~ ~ ~ ~ RPC .. !
12. History of Server - Client communication Socket RPC CORBA DCOM SOAP REST RMI 1983~ 1980s~1990s 1998~ 1999~ ~ ~ ~ HTTP . SOAP - XML REST - ( )JSON
13. History of Server - Client communication Socket RPC CORBA DCOM SOAP REST RMI 1983~ 1980s~1990s 1998~ 1999~ ~ ~ ~ HTTP . SOAP - XML REST - ( )JSON
14. History of Server - Client communication gRPC (google Remote Procedure Call) Stubby RPC Stubby
15. How it works gRPC • Stub • IDL (Interface Description Language) • Protocol Buffers
16. How it works? RPC - Stub • . • Polyglot programming
17. How it works gRPC • Stub • IDL (Interface Description Language) - - Stub • Protocol Buffers
18. How it works gRPC • Stub • IDL (Interface Description Language) • Protocol Buffers - (serialization) - IDL stub service interface code
19. How it works gRPC
22. gRPC service outline API - Unary RPC Model (User) - name, age, cache API - cache - cache User Server lang - go Client lang - python
23. Go • google • Docker, Kubernetes, Packer • • gRPC gRPC tool ( https:// github.com/grpc-ecosystem/ awesome-grpc )
24. api.proto file
25. Proto3 Protocol buffers language Version: proto2(default) & proto3 Service Message type Service field type generally scalar, enum or other message types filed number message .
26. api.proto file Version Service Message Field type Field number
27. Protocol Buffers stub, service interface code • protoc • .proto service interface code =
28. . go / python
29. - go api.pb.go
30. - go api.pb.go
31. How it works - Again gRPC
32. gRPC Go Server interface *pb=imported service interface code
33. Context in golang For deadlines, cancelation, and requested-scoped values - - cancelation goroutine? - go - Dave Cheny Never start a goroutine without knowing how it will stop
34. gRPC Go Server - 1 NewServer
35. gRPC Go Server - 2 RunServer
36. gRPC Python Client
37. Try it out! Compile and Run • Server • Client
38. Diagram Unary RPC Diagram Client Server Request Response
39. Diagram Stream RPC Diagram Client Server Message Message Message Message Message Message Example: Chatting
40. Diagram RPC with goroutine & channel Diagram - 1 Client Server 1 Request Response Server 2 Request Response
41. gRPC tips .proto - - git submodule .proto message - Load balancing - low-latency gRPC client-side LB
42. gRPC Pros 1.
43. gRPC Pros 2. .. • HTTP/2 default, binary data, header compression, cancellation propagation • Google App Engine n1-highcpu-16 CPU 11
44. gRPC Pros Others • • - , Tracing, Load Balancing, Health checking
45. gRPC Cons • - HTTP . (curl, postman..) ..?
46. gRPC compare with REST • , , REST . • .. !
47. Go s http request multiplexer Content-type base routing application/grpc -> direct grpc else -> grpc-gateway https://github.com/grpc- ecosystem/grpc-gateway
48. Go s http request multiplexer Alternative way
49. why gRPC is good at Microservice? What is Microservice • • / . • ? - - - -
51. why gRPC is good at Microservice? Microservice gRPC • • • gRPC network latency • typing/versioning •
52. Summary go grpc • Microservice gRPC • Polyglot • REST
53. Resources References & Resources • reference tutorial Github . • https://github.com/EJSohn/microservice-with-go-and-grpc
54. ! Q&A -